Lighting and battery circuits.



J. F. MGELROY.

LIGHTING AND BATTERY CIRCUITS.

APYLIGATION FILED 23.29, 1910.

976,743. Patented Nov. 22, 1910.

-b-Em Hill REMY

VITNE SES: INVENTOR @fl/0f M am @in BY f ATTY UNITED STATES PATENTOFFICE.

JAMES F. MOELROY, OF ALBANY, NEW YORK, ASSIGNOR T0 CONSOLIDATED CAB,HEAT- ING COMPANY, A CORPORATION OF WEST VIRGINIA.

LIGHTING AND BATTERY CIRCUITS.

Specification of Letters Patent.

Patented Nov. 22, 1910.

Application led April 29, 1910. Serial No. 558,319.

To all whom it may concern.'

lle it known that l, JAMES F. MoELRoY, a citizen of the United States,residing at Albany, county of Albany, State of New York, have inventedcertain new and useful I inprovements in Lighting and Battery Circuits,the following being a full, clear, and exact disclosure of) the one formof my invention which I at present deem referable.

F or a detailed description of tie present form of my invention,reference may be had to the following specification an to theaccompanying drawing which illustrates my invention diagraminatically.

My invention is designed for lighting an apartment, particularly arailway car, elther from a supply circuit as the normal mode, ortemporarily rom a storage battery operating I a different set of lampsfrom those employed l for the normal lighting.

In the accompanyin drawing the circuit 1, 2, 3, 4 is the norma lightingcircuit containing six main lamps C in series.

A is the main control switch acting on both the normal circuit and thebattery circuit. B is the charging switch that also acts on the normallightin circuit.

R is a relay in the a oresaid normal lighting vcircuit in serieswith themain lamps C and controlling the circuit containing battery lamps Dwhich are of much lower voltage than lamps C and are also in multiple.

The storage battery is shown at F and its workin g circuit, when relay Ris dcnergized by failure of the normal circuit, is 7, l), 10, 5. Itscharging circuit, when switch B is turned down, is 1, 2, 6, 5, 7, 8, 3,4, it being then included in the normal lighting circuit in series withthe lam s C. By this means the battery which von y o )crates thelowvoltage battery lamps can charged while the high volta e lamps C arein use without appreciably aecting them.

. Only the battery portion of the batterylamp circuit is included in thenormal circuit for chargingso that it will not be interfered with by therela switch.

By opening switch both the normal and the battery lighting circuits arebroken; by closinfr it either the normal or the battery lamps wiIl lightup according as the normal supply is operative or interrupted and therelay R is in consequence energized or not.

W'hat I claim as new and desire to secure by Letters Patent is:

1. The combination with a supply-circuit of a normal circuit therefrom,lamps in series therein, a battery-circuit, lamps in saidbattery-eircuit, a switch in Said normal circuit 'or closing the sameand adapted to coopera te with the terminals of the batter portion ofsaid battery-circuit to inclu e the battery in the normal circuit inseries with the lamps therein for charging, and a relay in the normalcircuit for opening the lamp portion of said battery circuit.

2. The combination with a normal circuit,

of a battery, a battery circuit, a switch inI the latter circuit, a reay in the normal circuit and controlling said switch, and a chargingswitch having contacts in said former circuit and having also contactsin said latter circuit between said relay controlled switch and thebattery, whereby the battery may be included in the normal circuit forharging without interference from said re- The combination with a normalcircuit containing lamps in series, of a battery circuit containinglamps in multiple, a common controlling switch for both circuits, arelay in the normal circuit controlling contacts located in said batterycircuit between the battery and the lamps, and a switch normallyclosinfr the normal circuit but adapted to connect t ie two parts of thenormal circuit on cach side of ltsclf with the respective batteryterminals.

In witness whereof I have hereunto set my hand, before two subscribingwitnesses, this 27th day of April, 1910.

JAMESv F. MCELROY.

Witnesses:

ERNEST D. JANSEN, ROBERT MoCooHRANn.

